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Telefunken

Telefunken EF86 6267 O-getter in Original Box - Diamond Bottom - Ulm 1963 - NOS

Telefunken EF86 6267 O-getter in Original Box - Diamond Bottom - Ulm 1963 - NOS

$138.00 USD
$138.00 USD
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Product Summary

Model: 1963 Telefunken EF86 6267 O-getter (Made in Germany)

Soundlumia Tube Sound Rating: 9.5/10 - Outstanding 

Early 1960s Ulm, Germany production - Unparalleled sound characteristics and superb build quality - True holographic sound stage with layered details and ultra clarity

Date code: U7213104 (U = Ulm, 3 = 1963)
 
GM (Mutual Conductance) test result: 102% NOS

Silkscreen: 100%

Packaging: Original Telefunken EF86 tube box

Professional Tube Testing

This set was tested and certified by RoeTest V11 tester with the following result: 

Measured transconductance (GM): 2.03 mA/V  - 102%  (100% = 2.0 mA/V)
Measured plate current (IA): 2.95 mA  - 98%  (100% = 3.0 mA)

NO shorts, leakage or gas. NO noise or microphonics.

Curve trace is also included in the original RoeTest report.
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